[Fix] Improve OpenAI authentication handling and error response

src-python/controller.py

@@ -1813,6 +1813,8 @@ class Controller:
         try:
             data = str(data)
             if data.startswith("sk-") and len(data) >= 164:
+                result = model.authenticationTranslatorOpenAIAuthKey(auth_key=data)
+                if result is True:
                     key = data
                     auth_keys = config.AUTH_KEYS
                     auth_keys[translator_name] = key
@@ -1827,6 +1829,14 @@ class Controller:
                     model.updateTranslatorOpenAIClient()
                     self.updateTranslationEngineAndEngineList()
                     response = {"status":200, "result":config.AUTH_KEYS[translator_name]}
+                else:
+                    response = {
+                        "status":400,
+                        "result":{
+                            "message":"Authentication failure of OpenAI auth key",
+                            "data": config.AUTH_KEYS[translator_name]
+                        }
+                    }
             else:
                 response = {
                     "status":400,